Nasal cannula



FIG. 1 is a top and front perspective view of a nasal cannula embodying our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a first side view thereof; and,

FIG. 8 is a second side view thereof.

Broken lines are used to illustrate features of the nasal cannula which form no part of the claimed design. Dash-dot lines are used to illustrate features of the nasal cannula which form no part of the claimed design. 

CLAIM The ornamental design for a nasal cannula, as shown and described. 